Hydrocarbon-burner.



No. 768,368. PATENTED AUG. 23 1904. A. M. HUNT & T. MIRK.

HYDROGARBON BURNER.

I APPLIOMION FILED APR. 1, 1903.l

.QQ N k UNITED STATES Patented August 23, 1904` APATENT OFFICE..

ANDREW M. HUNT AND THOMAS MTRK, or SAN rRANciSco'oALiroRNiA.

HYDRooARBoNv-.BURNER Y SPECIFICATION forming part of Letters Patent No. 768,368, dated August 23, 1904.

. Application filed April l, 1903. Serial No; 150,522'. (No model.) v

To all whom it may concern:

Be it known that we, ANDREwM. HUNT and THOMAS MIRK, citizens of the United States, residing in the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Hydrocarbon-Burners; and we do hereby declare the following to be a full, clear, and exact description of the same.

Practical operation of burners employinga combustion-chamber into which the hydrocarbon is injected has demonstrated that by reason of the intensity of the heat generated therein the roof or cover-wall of the Said combustion-chamber quickly burns out and renders the burner inefficient and short-lived.

Especially is such the case with the construc- 'have ascertained capable of being successfully accomplished by introducing above l.and in contact with the roof or top wall of the combustion-chamber a current of air sufficient to maintain the top wall or roof at a lower temv perature than the internal temperature of the Fig.A 4 ofthe drawings; and Fig. 6 is a similar View taken on line fw w.'

The numeral 1 indicates a longitudinal Hue, the interior of which serves asa-combustionchamber 2. This Hue at its rear end is closed, and in the side walls thereof is provided the outlet-openings 3. The hydrocarbon is injected into the forward end of the chamber 2 30 by means of the nozzle 4, the discharge end of which extends within the open end of the Hue 1.

Below the Hue 1 is arranged an air-Hue 5, which communicates at its rear end by passage-way 6 withan upper Hue 7. The Hue7I is arranged immediately above the roof or top wall 8 of the combustion-chamber 2, so that the air fed into Hue 5 is drawn over the upper surface of the top or roof wall 8 in order to maintain the same at a somewhat-reduced temperature or at a temperature considerably below that within the combustion-chamber. The forward endy of the Hue 7 is closed, and the said flue communicates with the interior of the combustion-chamber by means of the passage-way 9, formed through the roof or top wall 8. f'

lUnder this construction a body of comparatively'cool air is maintained circulating over the surface of the top wall or roof 8 of the combustion-chamber.

We have ascertained that under the above construction the life of the burner, so far as relates to the utilization of the described combustion-chamber, is considerably prolonged.

It is obvious that in lieu of the meansvof introducing the fresh air over the roof or top wall of the lcombustion-chamber 2 (set forth in'Figs. 1, 2, and 3 of the drawings) that a single Hue 10 may be employed, Figs. 4, 5, and 6 of the drawings. ln such case the Hue, like Hue 7, is arranged immediately above the roof or top wall 8 of the combustion-chamber, said Hue taking air directly into its forward open end. Under this arrangement the air is not vconveyed below the Hue 1. The gases escape from the burner through the lateral outlets or side openings 3.

' Having thus described the invention, what is claimed as new, and desired to be protected by Letters Patent, is-

In a hydrocarbon-furnace, the combination of an outer wall, the top, bottom and one end of which being continuous and uninterrupted, and the opposite end having a fresh-air inlet .at its lowermost portion, and a combustionadvance of the top of the outer Wall for forrn- In Witness whereof We have hereunto Set our ing an opening,- communicating with the cornlmnds. r bustlon-charnber, the space between the conivT' y i y x bustion-charnber and outer Wall being eontin- PIIIVUA 'l" 5 uous and uninterrupted, and a nozzle for hyl l l l x' clrocarbon passing through the outer Wall to lVitnesses: a point immediately below said last-mentioned F. W. BLARTON, opening. HENRY l. TRICoU. 

